Wrench.



A. D. TUTTLE & J. G. DUNCAN.

Patented Nov. 30, 1915.

2 SHEETS-SHEET I.

A. n. TUTTLE & 1. e.- DUNCAN. WRENCH.

APPLICAT! N F T 8, ma ma 0 PatentedNov. 30, 1915.

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ARNOLD D. TUTTLE AND JAMES G. DUNCAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

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Application filed October 18, 1915. Serial No. 56,469.

To (1 I /m//z if 'HMI/j concern:

lie it knownthat we, ARNOLD D. TUTTLE and Janus (.1. DUNCAN, citizens of the l nited States, residing at \Vashington, in the District of Columbia, have invented certain new and useful Improvements in \Yrenches: and we do hereby declare the following to be a full, clear, and exact descriptimi ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

()ur invention relates to improvements in wrenches. and it is especially intended to provide an adjustable wrench in which the jaws may be quickly and easily brought to the approximate desired position, and then may be nicely adjusted to fit the pipe, nut or other article which it is desired to engage with the wrench.

Our invention comprises briefly a handle having fixed jaws, a sliding jaw piece mounted on said handle, an adjusting lever, and a rack and dog arrangement operated by said adjusting lever whereby said sliding jaw piece may be moved backward or forward, relative to the handle, through a series of short distances; or the rack and dog arrangement may be thrown into the inoperative position and the sliding jaw piece may be moved freely on the handle, as

' will be more fully hereinafter described.

let'erence 18 had to the accompanying drawings, in which the same parts are indicated by the same reference symbols throughout the several views, and which Figure 1 is a side elevation of the device, the sliding jaw piece being shown as partly broken away, and the adjusting lever being in the posltlon for locking the sliding aw piece in place; Fig. 2 is a similar view showing the sliding jaw piece entirely broken away, and also parts of the handle broken away, but with the adjusting lever in the neutral position, in which position the sliding jaw piece may he slid freely backward and forward on the handle; Fig. 3 is a similar view to Fig. 2, as seen fronithe opposite side of the handle; Fig. 4 shows a section along the line 4-4 of Fig. 3, and looking in I the direction of the arrows; Fig. 5 (Sheet 1) shows a section along the line 55 of Fig. 2, and looking in the direction of the arrows; Fig. 6 is a detail showing the U- shaped rack mounted in the sliding jaw piece; Fig. 7 is a perspective view of the- Specification of Letters Patent.

- versely-disposed rack bars.

Patented Nov. 30, 1915.

handle is slotted as at a". Slidably mounted over the slotted portion of the handle is the sliding jaw piece B, which has its, head B preferably provided with two arms 6 and b, the arm I) being provided with a 'jaw If,

preferably plain, and the arm I) being providedwith a dentated jaw registering with the opposite angular jaw on the head .of the handle. This sliding jaw piece B is chambered, as at 12, and in this chambered portion is secured the U-shaped rack piece C, having arms 0 and 0' with a yoke 0 Thesearms 0 and '0. are provided with re versely-disposed teeth and constitute re- This U-shaped rack piece is secured in the sliding jaw piece B in any convenient way, as by means of the screws D. The outer sides of these rack arms 0' and 0; should preferably have a slight clearance from the walls of the inclosing chamber, so as to permit a very slight yielding of the rack bar when the corresponding dog is thrown into engagement there. ith.

The adjusting lever E is pivoted on the bolt 6, passing through the slotted portion of the handle A, and the heel E of this lever is cut away, as at e,- and is provided with a substantially V-shaped tongue 6 shown most clearly in Fig. 8; This tongue is rigidly secured to or integral with the heel of the lever E as shown in Fig. 8.

F and F are two dogs having revcrsclydisposed teeth f and f, which dogs are pivoted, as at f", to the reduced portion of the heel of the lever E and are connected together by the link G, see Figs. 7 and 8.

The adjusting lever E is-also preferably provided with a leaf spring'H, which will automatically throw the dogZIF into the lockin position as shown in Fig. l, and thus wil normally hold the slidlng jaw piece in the locked position. Vhen this lever is pressed inward against the action of the spring, to the neutral position shown in Fig. 2, both dogs will be disengaged and the sliding jaw piece may be slid freely by hand lengthwise of the handle.

If the parts he in the position shown in Fig. l, and it be desired to move the sliding jaw piece still farther forward, a slight vi-,

bratory movement inward of the adjusting lever E will cause the deg F to push up on the teeth of the rack bar 0; and by continuing this vibratory movement the rack bar will feed up one tooth at a time, causing the sliding jaw piece to approach the fixed jaw of the wrench, then if the adjusting lever E be released, the spring will restore the parts to the locked position shown in Fig. 1.

If, on theother hand, it is desired to open the jaws t1-.= gh slight increments at a time, if the adjusting lever E be thrown to the position shown in Fig. 2, and then be' pressed inward, the inclined teeth of the rack a will be forced backward, and if this series of vibrations be continued-the sliding jaw piece will be drawn backward one tooth at a time, thus opening the jaws gradually, and when the adjusting lever is released the spring will restore the sliding ifaw piece to the locked position, as shown in Fig. 1. Thus it will be seen that the sliding jaw piece may be fed gradually 'forward and gradually backward by simply vibrating the adjusting lever through a small angle inside or outside of the neutral position, as the case may be. I

By moving the adjusting lever to the neutral position shown in Fig. 2, the sliding jaw piece maybe quickly slid backward or forward on the handle by hand, if desired.

The wrench is particularly adapted for use in situations whele the size pipes, or similar objects to be encountered is not known, and cannot readily be determined, as, for example, in working on or under automobiles, amid complicated machin cry, or in constricted quarters, where the adjustment of an ordinary wrench would prove diilicult.

In operation, the device can be held in. and rapidly adjusted with, one hand. Advancement, bracing, or reversal or release is easily accomplished by controlling ones grip.

Accurate adjustment to the nut, or other object is speedily effected by simple vibration of the handle, and prevents lost motion, slipping and undue wear and tear on the object engaged by the jaws. Through thepincer-like effect the likelihood of dropping and loss of nuts is largely eliminated. Once securely gripped thenui;v cannot escape from the jaws until the operator desires to re lease it. Objects, such as nuts, or pipes, can be quickly engaged, held firmly, or released quickly. Of practical importance in this device is the reversing or releasing feature,

of nuts,

by which the jaws may be rapidly and easily widened by manipulating with one hand, the handle past the neutral point.

lVe have shown thelwrench piovided with two sets of jaws, one for use with nuts or angular bolt heads, and the other set for use as a pipe wrench; but it will be obvious that either set of jaws may be dispensed with and a single set of jaws may be used, as is common with' the ordinary monkey wrench.

It will be obvious that various modifications in the herein described apparatus, and in the construction, combination and arrangement of parts may be -made which could be used Without departing from the spirit of our invention.

Having thus described our invention what we claim and desire to secure by Letters Patent of the United States is l. A wrench of the character described, comprising a fixed jaw provided with a handle, a hollow sliding jaw mounted on said handle, a pair of racks having reverselydisposed teeth mounted in said sliding jaw, an adjusting lever pivoted to said fixed jaw and provided with an upwardly-projecting tongue, and dogs pivoted to said adjusting.

lever and having their backs adapted to engage said tongue as said adjusting lever is vibrated, said dogs being provided with reversely-disposed teeth adapted to engage the corresponding rack teeth in the sliding jaw, with means for coupling said dogs together, substantially as described.

2. A wrench of the character described, comprising a fixed jaw provided. with a handle, a hollow sliding jaw mounted on said handle, a pair of racks having reverselydisposed teeth mounted in said sliding jaw,

comprising a fixed jaw provided with" a handle, a hollow sliding jaw mounted on said handle, a pair of racks having reverselydisposed teeth mounted in said sliding jaw, an adjusting lever pivoted to said fixed jaw and provided with an upwardly-projecting tongue, dogs pivoted to said adjusting lever and having their backs adapted to engage said tongue as said adjusting lever is vibrated, said dogs being provided with reversely-disposed teeth adapted to engage the corresponding rack teeth in the sliding jaw,

with means for coupling said dogs together,

with a link hinged to each of said dogs and and a spring normally pressing said adjusting lever outward so as to throw one of said dogs into the locking position when said adjusting lever is released,substantially as described.

4. A wrench of the character described, comprising a fixed jaw provided with a handle. a hollow sliding jaw mounted on said handle, a pair of racks having reverselydisposed teeth mounted in said sliding jaw, an adjusting lever pivoted to said fixed jaw and provided with an upwardly-projecting tongue,.dogs pivoted to said adjusting lever and having their backs adapted .tto engage said tongue as said adjusting lever is vibrated, said dogs being provided withreversely-disposed teeth adapted to engage the corresponding rack teeth inthe sliding jaw,

connecting the same together, and a spring normallv pressing said adjusting lever outward so as to throw one of said dogs into the locking position when said adjusting lever is released, substantially as described.

5. A wrench of the character described, comprising a fixed jaw provided with a handle, a hollow sliding jaw mounted on said handle, a substantially U-shaped piece made of resilient metal constituting a pair of racks having reversely-disposed teeth, mounted in said sliding jaw, an adjusting lever pivoted to said fixed aw and providedwith an upwardly-projecting tongue, and dogs pivoted to said adjusting lever and having their backs adapted to engage-said tongue as said adjusting lever is vibrated, said dogs being provided with reverselydisposed teeth adapted to engage the corresponding rack teeth in the sliding jaw,with

means for coupling said dogs together, substantially as described.

6. A wrench of the character described, comprising a fixed jaw provided 'with a handle, a hollow sliding jaw mounted on said handle, a substantially U-shaped piece made of resilient metal constituting a pair of racks having reversely-disposed teeth, mounted in said sliding jaw, an adjusting lever pivoted to said fixed jaw and provided with an upwardly-projecting tongue, and dogs pivoted to said adjusting lever and having their backs adapted to engage said Copies of this patent may be obtained for tongue as said adjusting lever is vibrated, said dogs being provided with reverselydisposed teeth adapted to engage the corresponding rack teeth in the sliding jaw, with a link hinged to each of said dogs and connecting the same together, substantially as described.

7. A wrench of the character described, comprising a fixed jaw provided with a handle, a hollow sliding jaw mounted on said handle, a substantially J-shaped piece made of resilient metal constituting a pair of racks having reverselydisposed teeth, mounted in said sliding jaw, an adjusting lever pivoted to said fixed jaw and provided with an upwarclly-projecting tongue, dogs pivoted to said adjusting lever, and having their backs adapted to engage said tongue as said adjusting lever is vibrated, said dogs mounted in said sliding jaw, an adjusting lever pivoted to said fixed aw and provided with an upwardly-projecting tongue, dogs pivoted to said adjusting lever and having theirbacks adapted to engage said tongue as said adjusting lever is vibrated, said dogs being provided with reversely-disposed teeth adapted to engage the corresponding rack teeth in the sliding jaw, with a link. hinged to each of said dogs and connecting the same together, and a spring normally pressing said adjusting lever outward so as to throw one of said dogs into the locking position when said adjusting lever is released, substantially as described.

.In testimony whereof we aflix our signatures.

ARNOLD l). TUTTLIC. JAMES G. DUNCAN.

Washington, I). 0.

.lOO

five cents each, by addressing the Commissioner of Patents. 

